From: 
Half-Life 2: Get a Life
"GameInfo"
{
game "Get a Life"
type singleplayer_only
"homepage" "www.getalife-mod.com"
"developer" "GetaLife Team"
"developer_url" "www.getalife-mod.com"
"icon" "miligal"
FileSystem
{
SteamAppId 215
ToolsAppId 211
SearchPaths
{
Game |gameinfo_path|.
Game hl2
}
}
}